Magazine filter



May 15, 1928. 1,669,718

F. w. MANNxNG MAGAZINE FILTER Filed oct. 24, 1925 2 sheets-sheer 1 INVENTOR. Irre 1 W Manni/y.

May 15, 192s,

F. W. MANNING MAGAZINE FILTER Filed Oct. 24, 1925 2 Sheets-Sheet 2 INVENTOR. F red W Manni/ 12g BY M, l

A TTORN YS.

Patented May 15, 1928.

UNITED, STATES PATENT OFFICE.

FRED W. MANNING, OF BERKELEY, CALIFORNIA, ASSIGNOR TO STEWART-WARNER SPEEDOMETER CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION 0F VIR- GINIA.

MAGAZINE FILTER.

Application led October 24, 1925. Serial No. 64,495.

This invention relates to the treatment of li uids for effecting their purification or ot er desired improvements in their characteristics, but more particularly it relates to the purifying of used motor oils by clarificatlon, decolorization, or other treatment.

Motor oils of moving vehicles very quickly become contaminated with road dust, metal and carbon particles, and other impurities which are often held loosely together byl oxidized oil. These impurities not only cause wear to the moving parts of the engine but tend to clog the oil holes, and the abrasive action of these impurities is often accentuated by dilution of the lubricating oil caused by the addition of fuel oil and water by-products of operating with relatively cold engines. The constant wear on the engine parts due to the contamination of crank case oil of motor vehicles has been relieved to some extent by the use of various types of pressure filters. However, these have not been found to be very satisfactory, as their filtering fabrics gradually become clogged with impurities, resulting in decreased filtering rates and increased filtering pressures. The ultimate result is usually the replacement of the filter at considerable expense.

In two previous applications filed October 1 1925, and October 22, 1925, Serial Num- 'bers 59,787 and 64,247, respectively, I have described how the above mentioned objections may be obviated by means of a magazine type of filter in which the filtering fabric in the form of a belt is fed as required from a supply spool and carried forward during the filterlng operation onto a storage spool by means of an endless drainage member supported by rollers and driven as. defined in a plication #64,247 by a small motor attached to the filter base plate. In the present application I describe a somewhat different type of magazine filter in which the filtering fabric during the filtering operation is passed over and carried by a rotatin filtrate receiving drum rotated by means o reduction gearing driven by a flexible shaft connected to any suitable moving part of the en ine, such as the speed- -ometer drive gear 1n the transmission case.

In accordance with the present invention the oil to be filtered may be pumped'to the lter from any suitable source of supply such as the crank case or other reservoir for receiving the lubricant escaping from the lubricated parts of the engine or other machinery. The filtered oil may be led to the rocker arm bearings and from there distributed, or to any other suitable part of the engine 'for distribution. A relief or bypass valve may be inserted between the filters supply and discharge lines if desirable, but this will seldom be necessary as the rate of'filtration is constant due to fresh fabric being continuously or intermittently supplied for filtering purposes as the contaminated filtering fabric is removed and wound on a. storage spool. When the oil is cold, as when starting up the engine, such a valve may be of service but probably not at any other time.

Further, in accordance with the present invention, the filtering fabric or belt may be a closely woven metallic cloth, or it may be composed of cotton, paper, asbestos or other fibrous material strengthened by a metallic cloth or a screen incorporated in it, and this fibrous material may be made up in laminated sheets and impregnated with a treating agent as bone char, kieselguhr, etc.

The features of the invention, hereinbefore referred to in general terms, will be better understood by reference to the following description, taken in conjunction with the accompanying drawings which illustrate a preferred form of apparatus for carrying out my invention. It will be understood, however, that the construction herein illustrated and described is merely illustrative of how the features of the invention may be employed, and that the drawings are not to be construed as defining or limiting the scope of the invention, the claims appended to this specification being relied upon for lit motor vehicleJ showing relative position of lter apparatus with piping and shafting connections.

The apparatus as shown in Figs. 1 and 2 consists of sides and front 1 and forming with reduction gear box 3 and door plate 5 a closed filter chamber. Reduction gear box 3 with back cover plate f5 also forms a closed chamber. Spools 7 and 9 slip freely onto spool pins ll and 12) respectively which rotate freely in the front plate of the reduction ,e'ear box 3, their other ends being supported by center pins 15 and 17 respectively which are fastened regidly in the filter chamber door plate 'lhe filter belt from supply spool 7 passes under guide. roller 19 held in place by bolt 21, over and around perforated drum 23 under guide roller held in place by bolt 27 and onto the .storage spool f). The perforated drum with end plates 2f and 2t is mounted on a perforated hollow shaft 29 to one end of' which is welded driving shaft 35, the other end rotatin; r 'freely on filtrate outlet pipe 37, which is fastened rigidly to casing front 1. Surrounding filtrate outlet pipe 37 and between the drum end plate 2t and casing front 1 is a felt washer 39 to filter any oil that might pass the rotating surface into the filtrate outlet. Filtrate testing cock and fittings 42 and 43 are connected to the filtrate outlet 37. Unfiltered oil is prevented from passing into the filtrate drum between the ends of the belt by means of closure piece 1G extending the full width of the filter chamber, and under the ends ot and fastened to this closure piece, are strips ofl soft packing 47 and 49 which bear against the smooth narrow peripheral portions ol' cach end of the drinn, and between these narrow strips lic the drainage screen or plate 50 and over these strips and the drainage plate and between the drum end plates pass the filtering fabric bearing against both edges of the closure piece 4G. Plug 52 may be used for cleaning out or draining purposes.

Reduction gear box 3 and its cover plate G contain the reduction gearing for driving the filter druln which pulls the filtering belt. This comprises worm 51, worm gear 525, sun gears and 57 and planet gears 59 and (31. form gear 52) rotates freely on shaft 255 but sun gear 57 is keyed to it and sun gear 55 is fastened rigidy to bearing bracket (S25. Planet gears 59 and (3l. are both keyed to a shaft (St) which passes through and turns freely on the worm gear. llanet gears 59 and Gl are of the same diametrieal and circular pitch. Sun gears 55 and 57 are of the same diametrical pitch but very slightly in their circular pitch in that one gear has one tooth more or one less than the other, dependinpr upon the direction of rotation desired. This arrangement of reduction gearing gives a high speed ratio, is economical and compact and is found to be satisfactory where little power is to be transmitted as in the present ease.

Reduction gear box 3 also contains pulley (S5, springr coil belt G7, split pulley (39, tension spring 71, washer 73 and nut 75 for winding the. storage spool 9 by means of side lugs 1f) in the pin f3 and preventing any slack in the filtering belt between guide pulley and spool 9 which arrangement allowsl for belt slippage as the storage spool builds up. No stuffing boxes are shown between the filter and reduction gear chambers as it is desirable that the latter should remain filled with oil passing into it from the filter chamber.

Figures 3 and 4 show how the apparatus may be attached to the dash of a motor car and also how it may be operated from the transmission box and how the piping connections may be run. As shown the spiral gears 8l and 82 in the transmission casing drive the flexible shaft'ing tw'f the end of which may be attached to the speedometer Si. lVorm gear S5 on the flexible shaf'ting e3 may drive worm gear t connected by flexible shafting 87 to worm 51 in the rcduction gear box.

The operation of the apparatus thus constructed has been in part indicated in connection with the foregoing description. ()l from the sump iu the crank case reservoir enters the screen inlet S8 of the pump 59 a portion of it going to the crank shaf't bearings or other suitable parts of the engine and a portion of it passing up pipe 9U enters the filter at. 91 and after passing through the filtering belt into the drum leaves the filter through filtrate outlet 37 and passing through pipe 4l is carried to the rocker arm bearings or other suitable part of the engine .for distribution. lipe 95 is a continuation of pipe 90 past inlet 91 to connect with the oil gauge 92. A relief or by-pass valve 93 may connect the filter' feed pipe 90 to the filtrate discharge pipe 41 so that when the engine is first started, a portion of the oil may be by-passed until it warms up and obtains its regular rate of flow through the filtering belt.

Measuring rod 79, which moves outwardly as the storage spool builds up, will indicate clearly when the supply spool has become exhausted and the filter should be replenished with a fresh supply of filtering fabric. The supply spool upon becoming exhausted still retains one end of the belt which is fastened to it by means of hooks or other suitable device not shown and upon exhaustion of the belt the oil in the filter chamber will begin to pass through openings or small holes in the end ofthe belt into the filtrate drum and from there out. These holes will be provided at the innei` ends of the bells on all supply spools purchased and will be liu) n neeegtie `tor 'the purpose of allowing the oil to pass bausted and thus relieve the stre-in on thel apparatus which would arise it the oil were allowed to lilter through the belt with the filter drum rotating and the end ot the iiltering belt attached to the exhausted supply spool. "Coil spring 67 will place but little tension on the lter belt-only sutlicient to taire up the sleek between guide roller 25 and storage spool t).

Having thus described my invention, what elaim is:

l. A magazine filter comprising a casing; a moveble liter wall member within the casing having an interior chamber, a continuous lter member, e pair of spools 'for support-ing said tilter member with an intermediate portion thereof carried on the filter wall member, ineens providingan oil inlet into the casing outside the filter wall member, and on oil outlet from the casing leadingv from the chamber or said iilter Wall member; means tor moving the filter wall slowly in a manner for moving the iilter member therewith; driving means for one of the spools tor winding the lter member thereon from the other spool as it passes trom said other spool to and over the filter wall member, said driving means being adapted to drive the spool yieldingly, whereby it may yield to compensate for the increased diameter ot the coil of the filtering member wound thereon.

2. A magazine lter comprising a casing; a liltering drum member thereon, a pair of spools; a continuous filter member supported by the spools with an intermediate portion thereof carried about the ltering drum; means providing an oil inlet into the casing outside the tiltering drum, and an oil outlet from the casing ltrom within` said drum; means for rotating the drum slowly' in e manner for moving the continuous litter member therewith, and means Ytor driving one of the spools to wind the used filter member thereon es it passes trom the drum, said driving ineens being adopted to drive the spool yieldingly to compensate for the intreasing diameter ot the coil of the Jdltering member wound thereon es the winding continues.

3. it magazine filter comprising e casing; a movable lilter well member within the casing having an interior chamber, a continuons `lilter member, elpair oft spools tor supporting said filter member with an intermediate portion thereozt carried on the lilter wall member, means providing an oil inlet into the casing outside the filter wall member, and an oil outlet from the casing leading from the chamber ot said lter wall mem-V uberg. ydriving connections trom the engine for moving the lter wall slowly in a manner tor moving the tilter member therewith; connections from said engine driving connections for rotating one or" the spools tor winding the llter member thereon from the other spool as it passes trom said other spool to and over the filter wall member, seid last mentioned driving connections being adapted to drive the spool yieldingly, whereby it may yield to compensate tor the increased diameter ot the coil of the ltering member wound thereon.

FRED W. MANNltNG.

@til 

